ERMAKOV, Nikolai,
Milan CHYTRÝ a Milan VALACHOVIČ. Vegetation of the rock outcrops and screes in the forest-steppe and steppe belts of the Altai and Western Sayan Mts., southern Siberia.
Phytocoenologia. Berlin/Stuttgart: Gebrüder Borntraeger, 2006, roč. 36, č. 4, s. 509-545. ISSN 0340-269X.